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BS EN 60076-16:2011

BS EN 60076-16:2011

$167.15

Power transformers – Transformers for wind turbines applications

Published By Publication Date Number of Pages
BSI 2011 40
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This part of IEC 60076 applies to dry-type and liquid-immersed transformers for rated power 100 kVA up to 10 000 kVA for wind turbine application s having a winding with highest voltage for equipment up to and including 36 kV and at least one winding operating at a voltage greater than 1,1 kV.

Transformers covered by this standard comply with the relevant requirements prescribed in the IEC 60076 standards.

PDF Catalog

PDF Pages PDF Title
6 English

CONTENTS
8 INTRODUCTION
9 1 Scope
2 Normative references
10 3 Terms and definitions
4 Service conditions
4.1 Normal service conditions
4.2 Altitude
4.3 Temperature of cooling air
11 4.4 Content of harmonic currents in the transformer
4.5 Wave-shape of supply voltage
4.6 Transient over and under voltages
12 4.7 Humidity and salinity
4.8 Special electrical and environmental conditions around the transformer
Tables

Table 1 – Insulation levels
13 4.9 Level of vibration
4.10 Provision for unusual service conditions for transformers for wind turbine applications
4.11 Transportation and storage conditions
4.12 Corrosion protection
5 Electrical characteristics
5.1 Rated power
5.2 Highest voltage for equipment
14 5.3 Tappings
5.4 Connection group
5.5 Dimensioning of neutral terminal
5.6 Short circuit impedance
5.7 Insulation levels for high voltage and low voltage windings
5.8 Temperature rise guaranteed at rated conditions
15 5.9 Overload capability
5.10 Inrush current
5.11 Ability to withstand short circuit
5.12 Operation with forced cooling
6 Rating plate
7 Tests
7.1 List and classification of tests (routine, type and special tests)
7.2 Routine tests
16 7.3 Type tests
7.4 Special tests
18 Annex A (informative)
Calculation method and tables
19 Figures

Figure A.1 – Heat dissipation in a natural ventilated room
25 Table A.1 – Impact of harmonics content on liquid-immersed transformer losses
28 Table A.2 – Impact of harmonics content on dry type transformers losses
31 Table A.3 – Example of voltage harmonic order
32 Figure A.2 – Schematic diagram of power frequency current injection apparatus
33 Figure A.3 – Switched transformer winding voltage responses with capacitor injection
34 Figure A.4 – HV Injection test figure
35 Figure A.5 – Example of measurement device
38 Bibliography

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BS EN 60076-16:2011
$167.15